纳米氧化铈微粒对锌镀层结构和耐蚀性能的影响  

Effect of CeO_2 Nanoparticle on Structure and Properties of Zinc Electrodeposition

作　　者：何建平[1] 骆心怡[1] 李顺林[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016

出　　处：《稀土》2003年第1期24-27,共4页Chinese Rare Earths

基　　金：江苏省高技术项目 (GB2 0 0 10 2 6)

摘　　要：耐蚀性能试验结果表明 ,从含纳米氧化铈微粒的氯化钾镀锌溶液中 ,所得锌镀层的耐蚀能力比纯锌层的高 4 8%～ 6 0 % ;而从含微米氧化铈微粒的镀锌溶液中 ,所得锌镀层的耐蚀能力与纯锌层相比则没有明显差别。ICP测试的结果显示 ,对应镀层中纳米氧化铈的含量为 0 .2 2 % (质量分数 )左右 ,微米氧化铈的含量只有 0 .0 2 5 %。用 X射线衍射试验分别对含纳米氧化铈微粒的锌镀层和纯锌层的结构进行分析 ,结果表明纳米氧化铈微粒改变了锌镀层结构 ,使镀层晶面的择优取向程度增大。显然 ,锌镀层结构的这种变化是镀层耐蚀能力获得改善的根本原因。With the addition of CeO 2 nanoparticles into the potassium chloride zinc plating solution, the corrosion resistance of the electrodeposited nanocomposite zinc coating was preferable to that of the pure zinc coating without the nanoparticles on a mild steel substrate by 48%~60%, and that the corrosion resistance of the zinc coating with CeO 2 microparticles was not nearly improved ICP results showed that the content of the nanoparticles in the zinc coating was about 0 22%(wt), and the content of CeO 2 microparticles was about only 0 025%(wt) XRD experiments were correlated to crystalline structure of zinc coating with and without the nanoparticles, the results suggested that the addition of the nanoparticles is to lead a preferred orientation of the crystal planes Obviously, the main reason for the corrosion resistance improvement of the coating was the variation of the fabric structure

关 键 词：纳米氧化铈 结构 锌镀层 耐蚀能力 择优取向 锌 电镀 添加剂 

分 类 号：TQ153.15[化学工程—电化学工业]